Heat a sauté pan over medium heat. Add the spinach, sesame oil, sugar, and
soy sauce. Cook the spinach, stirring, until the leaves are just wilted,
about 3 minutes. Spread the spinach out flat on a plate to cool quickly in
the refrigerator for 10 minutes. This will keep the color a vivid green.

When the spinach is cool, taste and correct the seasoning. Pile in a bowl
and sprinkle on the toasted sesame seeds. The spinach is served cold.

Note: Toast the sesame seeds in a deep frying pan over medium heat,
stirring constantly for about 4 minutes, or until golden brown.